The Student Room Group

Integration question

Solve ∫1/(1-√(x+3)) dx
Reply 1
Avatar for Zacken
Zacken
22
Original post by B_9710
Solve ∫1/(1-√(x+3)) dx


What have you tried? This isn't a homework solving site.
say please
Reply 3
Avatar for Zacken
Zacken
22
Original post by the bear
say please


Original post by B_9710
Solve ∫1/(1-√(x+3)) dx


And maybe offer us a cookie or two.
did you try a substitution yet ?
Reply 5
Avatar for ubisoft
ubisoft
3
Hmm even I've forgot to do this which is embarrassing :s-smilie:

If I'm not mistaken, you'll have to make 2 substitutions, and you should end up with ln in your answer
Reply 6
Avatar for TeeEm
TeeEm
19
Original post by ubisoft
Hmm even I've forgot to do this which is embarrassing :s-smilie:

If I'm not mistaken, you'll have to make 2 substitutions, and you should end up with ln in your answer


one substitution suffices
Reply 7
Avatar for TeeEm
TeeEm
19
Original post by B_9710
Solve ∫1/(1-√(x+3)) dx


best approach substitution the entire denominator
solve for x before differentiating
Reply 8
Avatar for B_9710
B_9710
OP
18
Original post by Zacken
What have you tried? This isn't a homework solving site.


I can do it. I just want to see how other people solve it.
Reply 9
Avatar for B_9710
B_9710
OP
18
I like seeing how other people solve problems to see if I can pick up any tips or shortcuts or anything like that.
Reply 10
Avatar for Zacken
Zacken
22
Original post by B_9710
I can do it. I just want to see how other people solve it.


u = sqrt(x+3)
Reply 11
Avatar for B_9710
B_9710
OP
18
Original post by Zacken
What have you tried? This isn't a homework solving site.


And no it isn't homework. I just made the question up :smile:
(edited 8 years ago)
Reply 12
Avatar for ubisoft
ubisoft
3
OP what was your answer? I've tried it, this is what I got:

2ln[1+sqrt(x+3)] - 2sqrt(x+3) + c

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you